Chargify ( http://chargify.com/ http://chargify.com/ ) - recurring billing DNSimple ( http://dnsimple.com/ http://dnsimple.com/ ) - domain and dns management

Chargify ( http://chargify.com/ http://chargify.com/ ) - recurring billing DNSimple ( http://dnsimple.com/ http://dnsimple.com/ ) - domain and dns management GitHub ( http://github.com/ http://github.com/ ) - source code DropBox ( http://dropbox.com/ http://dropbox.com/ ) - file sharing PivotalTracker ( http://pivotaltracker.com http://pivotaltracker.com ) - feature/issue tracking SendGrid ( http://sendgrid.com http://sendgrid.com ) - outbound app email GetSatisfaction ( http://getsatisfaction.com/ http://getsatisfaction.com/ ) - for community support Google Apps for mail and docs Google Analytics for web site analytics MixPanel ( http://mixpanel.com/ http://mixpanel.com/ ) for deeper application analytics Harvest ( http://harvestapp.com/ http://harvestapp.com/ ) for time tracking and billing Pingdom ( http://pingdom.com/ http://pingdom.com/ ) for monitoring